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IL126826A0 - Optical hygrometers - Google Patents

Optical hygrometers

Info

Publication number
IL126826A0
IL126826A0 IL12682698A IL12682698A IL126826A0 IL 126826 A0 IL126826 A0 IL 126826A0 IL 12682698 A IL12682698 A IL 12682698A IL 12682698 A IL12682698 A IL 12682698A IL 126826 A0 IL126826 A0 IL 126826A0
Authority
IL
Israel
Prior art keywords
dew
optical
hygrometers
detecting
condensation
Prior art date
Application number
IL12682698A
Original Assignee
Optiguide Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Optiguide Ltd filed Critical Optiguide Ltd
Priority to IL12682698A priority Critical patent/IL126826A0/en
Publication of IL126826A0 publication Critical patent/IL126826A0/en
Priority to PCT/IL1999/000571 priority patent/WO2000026652A1/en
Priority to AU64860/99A priority patent/AU6486099A/en
Priority to US09/830,494 priority patent/US6575621B1/en
Priority to IL14283499A priority patent/IL142834A/en
Priority to AT99952776T priority patent/ATE331213T1/en
Priority to DE69932072T priority patent/DE69932072D1/en
Priority to CNB998139092A priority patent/CN1168977C/en
Priority to EP99952776A priority patent/EP1125115B1/en
Priority to JP2000579982A priority patent/JP2002529700A/en
Priority to CA002349539A priority patent/CA2349539A1/en
Priority to CN200410056221.7A priority patent/CN1657925A/en
Priority to ES99952776T priority patent/ES2270618T3/en
Priority to ZA200103389A priority patent/ZA200103389B/en
Priority to US10/455,255 priority patent/US6926439B2/en
Priority to IL16625005A priority patent/IL166250A0/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
    • G01N25/68—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of a condensing surface

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Pinball Game Machines (AREA)
  • Gas Or Oil Filled Cable Accessories (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

The invention concerns dew point hygrometers based on condensation of dew on ends of optical fibers, or on surfaces of an optical prism. The invention also concerns a dew sensor for determining the natural dew condensation by optical means and a dew sensor capable of detecting dew by detecting a change in capacitance.
IL12682698A 1998-10-30 1998-10-30 Optical hygrometers IL126826A0 (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
IL12682698A IL126826A0 (en) 1998-10-30 1998-10-30 Optical hygrometers
ES99952776T ES2270618T3 (en) 1998-10-30 1999-10-29 DEGREE POINT HYGROMETERS AND MOISTURE SENSORS.
DE69932072T DE69932072D1 (en) 1998-10-30 1999-10-29 TAUPUNK AND CONVECTION SENSORS
EP99952776A EP1125115B1 (en) 1998-10-30 1999-10-29 Dew point hygrometers and dew sensors
US09/830,494 US6575621B1 (en) 1998-10-30 1999-10-29 Dew point hygrometers and dew sensors
IL14283499A IL142834A (en) 1998-10-30 1999-10-29 Capacitive dew sensor
AT99952776T ATE331213T1 (en) 1998-10-30 1999-10-29 DEW POINT AND CONDENSING SENSORS
PCT/IL1999/000571 WO2000026652A1 (en) 1998-10-30 1999-10-29 Dew point hygrometers and dew sensors
CNB998139092A CN1168977C (en) 1998-10-30 1999-10-29 Dew point hygrometer and dew detector
AU64860/99A AU6486099A (en) 1998-10-30 1999-10-29 Dew point hygrometers and dew sensors
JP2000579982A JP2002529700A (en) 1998-10-30 1999-10-29 Dew point hygrometer and dew sensor
CA002349539A CA2349539A1 (en) 1998-10-30 1999-10-29 Dew point hygrometers and dew sensors
CN200410056221.7A CN1657925A (en) 1998-10-30 1999-10-29 Dew point hygrometers and dew sensors
ZA200103389A ZA200103389B (en) 1998-10-30 2001-04-25 Dew point hygrometers and dew sensors.
US10/455,255 US6926439B2 (en) 1998-10-30 2003-06-05 Dew point hygrometers and dew sensors
IL16625005A IL166250A0 (en) 1998-10-30 2005-01-12 A hygrometers with displaceable film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL12682698A IL126826A0 (en) 1998-10-30 1998-10-30 Optical hygrometers

Publications (1)

Publication Number Publication Date
IL126826A0 true IL126826A0 (en) 1999-08-17

Family

ID=11072083

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12682698A IL126826A0 (en) 1998-10-30 1998-10-30 Optical hygrometers

Country Status (12)

Country Link
US (1) US6575621B1 (en)
EP (1) EP1125115B1 (en)
JP (1) JP2002529700A (en)
CN (2) CN1657925A (en)
AT (1) ATE331213T1 (en)
AU (1) AU6486099A (en)
CA (1) CA2349539A1 (en)
DE (1) DE69932072D1 (en)
ES (1) ES2270618T3 (en)
IL (1) IL126826A0 (en)
WO (1) WO2000026652A1 (en)
ZA (1) ZA200103389B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
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WO2003044510A1 (en) * 2001-11-20 2003-05-30 Aalborg Universitet Dynamic dew point analysis method and a device for determining the dew point temperature and relative humidity
JP2004108940A (en) * 2002-09-18 2004-04-08 National Institute Of Advanced Industrial & Technology Dew point measuring device using optical waveguide
JP4354860B2 (en) * 2004-03-30 2009-10-28 株式会社山武 Moisture detector
GB0418555D0 (en) * 2004-08-19 2004-09-22 Michell Instr Ltd Apparatus for measuring dew point of a gas stream
JP4685513B2 (en) * 2005-05-31 2011-05-18 株式会社山武 Mirror surface cooling type sensor
JP2007101479A (en) * 2005-10-07 2007-04-19 Earekkusu:Kk Condensation sensor
DE102006013726A1 (en) * 2006-03-24 2007-09-27 Bartec Gmbh Gaseous fuel e.g. biogas, hydrocarbon dew point determining method, involves finding actual temperature of condensation surface during light intensity gain or loss, and outputting actual temperature as measure for dew point temperature
DE102007052796B4 (en) * 2007-11-02 2018-10-11 Hochschule Niederrhein Active fiber optic dewing device
EP2297491B1 (en) 2008-05-21 2013-10-30 John Crane, Inc. Seal monitoring and control system
US9388686B2 (en) 2010-01-13 2016-07-12 Halliburton Energy Services, Inc. Maximizing hydrocarbon production while controlling phase behavior or precipitation of reservoir impairing liquids or solids
US9063067B1 (en) 2010-11-17 2015-06-23 Alvin P. Schmitt Moisture sensing devices
DE102011076220A1 (en) * 2011-05-20 2012-11-22 BSH Bosch und Siemens Hausgeräte GmbH Dryer with humidity sensor and method for its operation
US8786860B2 (en) * 2011-10-20 2014-07-22 Schlumberger Technology Corporation Measurement of liquid fraction dropout using micropatterned surfaces
US8764414B2 (en) * 2011-11-07 2014-07-01 Bha Altair, Llc System for detecting contaminants in an intake flow of a compressor
EP4008934B1 (en) 2016-02-23 2025-07-16 John Crane UK Ltd. System for predictive diagnostics for mechanical systems
JP2018173323A (en) * 2017-03-31 2018-11-08 アズビル株式会社 Dryness level determination device and dryness level determination method
CN109798839B (en) * 2017-11-16 2021-04-09 致茂电子(苏州)有限公司 Surface measurement system
CN108181345B (en) * 2017-11-27 2020-05-08 中国空间技术研究院 A device and method for testing condensate formation
CN108872158B (en) * 2018-05-31 2020-12-29 京东方科技集团股份有限公司 Humidity detector
CN109239011B (en) * 2018-07-20 2024-04-30 华南师范大学 Optical fiber dew point humidity detection device, system and control method thereof
CN110471132B (en) * 2019-08-23 2021-06-08 国网山东省电力公司济南供电公司 Method for online monitoring of condensation in outdoor ring main unit or branch box
CN110646471A (en) * 2019-09-29 2020-01-03 杭州铂得科技有限公司 Microenvironment intelligent monitoring device and microenvironment intelligent monitoring system
CN112666217A (en) * 2020-11-10 2021-04-16 西安交通大学 Capacitive dew point monitoring device and method
KR102569705B1 (en) * 2021-10-08 2023-08-24 에스티에이코퍼레이션 주식회사 Sensor for detecting a change in the state of the medium
CN119355047A (en) * 2024-10-28 2025-01-24 中国航空工业集团公司北京长城计量测试技术研究所 Dew point temperature measurement device and method
CN120028395B (en) * 2025-02-19 2025-10-14 广州赛拉机电有限公司 Environment detecting instrument for air humidity

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US3611788A (en) * 1969-10-08 1971-10-12 Anatoly Kuzmich Amelkin Dew-point hygrometer
US3623356A (en) 1969-12-18 1971-11-30 Eg & G Inc Dew point hygrometer
US4216669A (en) 1978-10-06 1980-08-12 General Eastern Instruments Corporation Contaminant error reduction system for dew point hygrometers
DE3024523A1 (en) * 1980-06-28 1982-01-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt HUMIDITY SENSOR DESIGNED AS AN ELECTRIC CAPACITOR
DE3231995C2 (en) 1982-08-27 1985-06-27 Endress U. Hauser Gmbh U. Co, 7867 Maulburg Method and arrangement for measuring the contamination of a capacitive dew point sensor
JPS6118850A (en) * 1984-07-06 1986-01-27 Chino Works Ltd Humidity and dew condensation detection element
DE3708697A1 (en) * 1987-03-18 1988-09-29 Draegerwerk Ag METHOD AND ARRANGEMENT FOR MEASURING THE DEW POINT
DE3713864A1 (en) * 1987-04-25 1988-11-17 Hoelter Heinz Method for the accurate measurement of the relative atmospheric humidity
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JP2000114090A (en) * 1998-09-30 2000-04-21 Sony Corp Capacitor, method of manufacturing capacitor, printed circuit board, and method of manufacturing printed circuit board
US6126311A (en) * 1998-11-02 2000-10-03 Claud S. Gordon Company Dew point sensor using mems

Also Published As

Publication number Publication date
ES2270618T3 (en) 2007-04-01
DE69932072D1 (en) 2006-08-03
EP1125115B1 (en) 2006-06-21
JP2002529700A (en) 2002-09-10
CN1657925A (en) 2005-08-24
AU6486099A (en) 2000-05-22
CA2349539A1 (en) 2000-05-11
CN1329719A (en) 2002-01-02
CN1168977C (en) 2004-09-29
WO2000026652A1 (en) 2000-05-11
US6575621B1 (en) 2003-06-10
ZA200103389B (en) 2002-07-25
EP1125115A1 (en) 2001-08-22
ATE331213T1 (en) 2006-07-15

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